ISO 11661:2022
(Main)Mobile cranes — Presentation of rated capacity charts
Mobile cranes — Presentation of rated capacity charts
This document specifies a standard presentation or format for mobile crane rated capacities on rated capacity charts. It is applicable to mobile cranes fitted with boom and boom/jib combinations as defined in ISO 4306-2.
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INTERNATIONAL ISO
STANDARD 11661
Second edition
2022-01
Mobile cranes — Presentation of rated
capacity charts
Grues mobiles — Présentation des tableaux de charges
Reference number
ISO 11661:2022(E)
© ISO 2022
---------------------- Page: 1 ----------------------
ISO 11661:2022(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2022
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
© ISO 2022 – All rights reserved
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ISO 11661:2022(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Crane rating manual . 2
4.1 General . 2
4.2 Content of manual . 2
4.2.1 Boom extend modes and configurations . 2
4.2.2 Counterweight configuration. 2
4.2.3 Auxiliary equipment mass table . 2
4.2.4 Working range diagrams . 2
4.2.5 Forward stability . 2
4.2.6 Backward stability . 2
4.2.7 Working area diagram . 3
4.2.8 Notes . 3
4.2.9 Maximum outrigger reaction . 3
5 Rated capacity chart .3
5.1 Data required . 3
6 Data publication — General requirements . 4
6.1 General . 4
6.2 Language . 4
6.3 Crane rating manuals published in physical form . 4
6.3.1 Paper/chart . 4
6.3.2 Cover . 4
6.3.3 Binding . 4
6.3.4 Page layout . 4
6.3.5 Reproductions . 4
6.4 Readability and print (type) size . 5
6.5 Crane rating manuals published in electronic form. 5
7 Data location . 5
7.1 Placement . 5
7.2 Fastening . . 5
8 Data presentation . 5
Annex A (informative) Examples of data presentation formats . 6
iii
© ISO 2022 – All rights reserved
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ISO 11661:2022(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 96, Cranes, Subcommittee SC 6, Mobile
cranes.
This second edition cancels and replaces the first edition (ISO 11661:1998), which has been technically
revised.
The main changes are as follows:
— added 6.5 for manuals in electronic form;
— re-labelled items in Annex A as examples.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
© ISO 2022 – All rights reserved
---------------------- Page: 4 ----------------------
INTERNATIONAL STANDARD ISO 11661:2022(E)
Mobile cranes — Presentation of rated capacity charts
1 Scope
This document specifies a standard presentation or format for mobile crane rated capacities on rated
capacity charts.
It is applicable to mobile cranes fitted with boom and boom/jib combinations as defined in ISO 4306-2.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 4306 (all parts), Cranes — Vocabulary — Part 2: Mobile cranes
3 Terms and definitions
For the purposes of this document, the terms and definitions given in the ISO 4306 series and the
following apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
crane rating manual
collection of all rated capacity charts (3.2), working area definitions and diagrams, working range
diagrams (3.3), allowable configurations, warning notes, and other information supplied by the
manufacturer for crane operation
3.2
rated capacity chart
tabulation detailing a crane’s lifting capacities, set-up and operational information for specific boom and
boom/jib combinations, counterweight configurations, slew ranges and crane support configurations
3.3
working range diagram
side elevation view of the crane depicting the heights and radii for all allowable boom and boom/jib
combinations
Note 1 to entry: It can also depict and warn about areas of instability.
3.4
working area diagram
plan (top) view of the crane depicting working areas (i.e. 360°, over side, over front) and operating
limitations in these areas
1
© ISO 2022 – All rights reserved
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ISO 11661:2022(E)
4 Crane rating manual
4.1 General
The crane rating manual shall be supplied with each crane and be available to the operator when at the
controls. The crane rating manual may be in electronic or physical form such as paper, plastic or metal.
When electronic form is supplied, an alternative method for referencing the crane rating manual shall
be supplied with the crane and shall be available to the crane operator for when the electronic system
is not functional.
4.2 Content of manual
4.2.1 Boom extend modes and configurations
The crane rating manual shall contain information necessary to identify and arrange the boom extend
mode configuration for each rated capacity chart. For cranes with only one boom extend mode, this can
be omitted.
4.2.2 Counterweight configuration
The crane rating manual shall contain information necessary to identify and arrange the required
counterweight configuration for each rated capacity chart. For cranes with only a fixed counterweight
(CTWT), this can be omitted.
4.2.3 Auxiliary equipment mass table
The crane rating manual shall include a table consisting of the equivalent deductions for all auxiliary
equipment that can be installed on the boom. When such equipment is installed, instructions shall be
provided if these tabulated values are to be subtracted from the rated capacities in the rated capacity
chart to determine the net available capacity. This table can be either at one place within the manual or
included with each applicable rated capacity chart.
Auxiliary equipment is any equipment provided by the manufacturer with an individual crane that can
be installed onto the crane except via the load hoist line (e.g. jibs). Equipment that is attached via the
load hoist line, such as hook blocks, shall be considered as part of the load subtracted from the printed
capacities on the chart. Illustrations, where deemed necessary, should accompany the mass table.
4.2.4 Working range diagrams
The crane rating manual shall include a working range diagram for each main configuration as
determined by the manufacturer (see Example A.3). The diagram can be located at one place within
the manual or as a corresponding diagram with each rated capacity chart on the opposite facing page.
For simple cranes, where all unloaded boom instability areas can be clearly shown on a single working
range diagram, it may be separately mounted and not included in the manual.
4.2.5 Forward stability
If forward stability limitations exist for any configuration in an unloaded condition, these limitations
shall be clearly defined along with any requirements. An unloaded condition at a given boom length/
angle is a condition where only the heaviest load block (e.g. hook block, overhaul ball) specified by the
manufacturer for the specific machine is attached to the crane via the load hoist line.
4.2.6 Backward stability
If backward stability limitations exist for any configuration, these limitations shall be clearly defined
on the working range diagram or on the specific rated capacity chart.
2
© ISO 2022 – All rights reserved
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ISO 11661:2022(E)
4.2.7 Working area diagram
The crane rating manual shall include a working area diagram for which rating capacities apply. The
working area diagram can be either at one place within the manual or included with each applicable
rated capacity chart (see Example A.4).
4.2.8 Notes
Set-up,
...
FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 11661
ISO/TC 96/SC 6
Mobile cranes — Presentation of rated
Secretariat: ANSI
capacity charts
Voting begins on:
2021-10-18
Grues mobiles — Présentation des tableaux de charges
Voting terminates on:
2021-12-13
RECIPIENTS OF THIS DRAFT ARE INVITED TO
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/FDIS 11661:2021(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS. © ISO 2021
---------------------- Page: 1 ----------------------
ISO/FDIS 11661:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
© ISO 2021 – All rights reserved
---------------------- Page: 2 ----------------------
ISO/FDIS 11661:2021(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Crane rating manual . 2
4.1 General . 2
4.2 Content of manual . 2
4.2.1 Boom extend modes and configurations . 2
4.2.2 Counterweight configuration. 2
4.2.3 Auxiliary equipment mass table . 2
4.2.4 Working range diagrams . 2
4.2.5 Forward stability . 2
4.2.6 Backward stability . 2
4.2.7 Working area diagram . 3
4.2.8 Notes . 3
4.2.9 Maximum outrigger reaction . 3
5 Rated capacity chart .3
5.1 Data required . 3
6 Data publication – general requirements . 4
6.1 General . 4
6.2 Language . 4
6.3 Crane rating manuals published in physical form . 4
6.3.1 Paper/chart . 4
6.3.2 Cover . 4
6.3.3 Binding . 4
6.3.4 Page layout . 4
6.3.5 Reproductions . 4
6.4 Readability and print (type) size . 5
6.5 Crane rating manuals published in electronic form. 5
7 Data location . 5
7.1 Placement . 5
7.2 Fastening . . 5
8 Data presentation . 5
Annex A (informative) Examples of data presentation formats . 6
iii
© ISO 2021 – All rights reserved
---------------------- Page: 3 ----------------------
ISO/FDIS 11661:2021(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 96, Cranes, Subcommittee SC 6, Mobile
cranes.
This second edition cancels and replaces the first edition (ISO 11661:1998), which has been technically
revised.
The main changes compared to the previous edition are as follows:
— added 6.5 for manuals in electronic form;
— re-labelled items in Annex A as examples.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
© ISO 2021 – All rights reserved
---------------------- Page: 4 ----------------------
FINAL DRAFT INTERNATIONAL STANDARD ISO/FDIS 11661:2021(E)
Mobile cranes — Presentation of rated capacity charts
1 Scope
This document specifies a standard presentation or format for mobile crane rated capacities on rated
capacity charts.
It is applicable to mobile cranes fitted with boom and boom/jib combinations as defined in ISO 4306-2.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 4306 (all parts), Cranes — Vocabulary — Part 2: Mobile cranes
3 Terms and definitions
For the purposes of this document, the terms and definitions given in the ISO 4306 series and the
following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
crane rating manual
collection of all rated capacity charts (3.2), working area definitions and diagrams, working range
diagrams (3.3), allowable configurations, warning notes, and other information supplied by the
manufacturer for crane operation
3.2
rated capacity chart
tabulation detailing a crane’s lifting capacities, set-up and operational information for specific boom and
boom/jib combinations, counterweight configurations, slew ranges and crane support configurations
3.3
working range diagram
side elevation view of the crane depicting the heights and radii for all allowable boom and boom/jib
combinations
Note 1 to entry: It can also depict and warn about areas of instability.
3.4
working area diagram
plan (top) view of the crane depicting working areas (i.e. 360°, over side, over front, etc.) and operating
limitations in these areas
1
© ISO 2021 – All rights reserved
---------------------- Page: 5 ----------------------
ISO/FDIS 11661:2021(E)
4 Crane rating manual
4.1 General
The crane rating manual shall be supplied with each crane and be available to the operator when at the
controls. The crane rating manual may be in electronic or physical form such as paper, plastic or metal.
When electronic form is supplied, an alternative method for referencing the crane rating manual shall
be supplied with the crane and shall be available to the crane operator for when the electronic system
is not functional.
4.2 Content of manual
4.2.1 Boom extend modes and configurations
The crane rating manual shall contain information necessary to identify and arrange the boom extend
mode configuration for each rated capacity chart. For cranes with only one boom extend mode, this can
be omitted.
4.2.2 Counterweight configuration
The crane rating manual shall contain information necessary to identify and arrange the required
counterweight configuration for each rated capacity chart. For cranes with only a fixed counterweight
(CTWT), this can be omitted.
4.2.3 Auxiliary equipment mass table
The crane rating manual shall include a table consisting of the equivalent deductions for all auxiliary
equipment that can be installed on the boom. When such equipment is installed, instructions shall be
provided if these tabulated values are to be subtracted from the rated capacities in the rated capacity
chart to determine the net available capacity. This table can be either at one place within the manual or
included with each applicable rated capacity chart.
Auxiliary equipment is any equipment provided by the manufacturer with an individual crane that can
be installed onto the crane except via the load hoist line (e.g. jibs). Equipment that is attached via the
load hoist line, such as hook blocks, shall be considered as part of the load subtracted from the printed
capacities on the chart. Illustrations, where deemed necessary, should accompany the mass table.
4.2.4 Working range diagrams
The crane rating manual shall include a working range diagram for each main configuration as
determined by the manufacturer (see Example A.3). The diagram can be located-at one place within
the manual or as a corresponding diagram with each rated capacity chart on the opposite facing page.
For simple cranes, where all unloaded boom instability areas can be clearly shown on a single working
range diagram, it may be separately mounted and not included in the manual.
4.2.5 Forward stability
If forward stability limitations exist for any configuration in an unloaded condition, these limitations
shall be clearly defined along with any requirements. An unloaded condition at a given boom length/
angle is a condition where only the heaviest load block (e.g. hook block, overhaul ball) specified by the
manufacturer for the specific machine is attached to the crane via the load hoist line.
4.2.6 Backward stability
If backward stability limitations exist for any configuration, these limitations shall be clearly defined
on the working range diagram or on the specific rated capacity chart.
2
© ISO 2021 – All rights reserved
---------------------- Page: 6 ----------------------
...
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